Compatible with all kinds of boards:
Skateboard, Longboard, Cruisers, Roller Skates, Mini cruiser, Trike and other Wheels etc.
Package Size: 3.75 * 1.78 * 0.68 inch
Weight: 0.26LB
NOTE:
Because these bearings are pre-filled with high-speed bearing oil,
so its speed will be relatively slow when it is rotated, but it is very smooth.